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Re: Re: from the list select

  • To: mathgroup at smc.vnet.net
  • Subject: [mg101107] Re: [mg101085] Re: [mg101048] from the list select
  • From: Murray Eisenberg <murray at math.umass.edu>
  • Date: Wed, 24 Jun 2009 06:32:41 -0400 (EDT)
  • Organization: Mathematics & Statistics, Univ. of Mass./Amherst
  • References: <200906220823.EAA09375@smc.vnet.net> <200906231108.HAA08460@smc.vnet.net>
  • Reply-to: murray at math.umass.edu

Sorry, but I beg to differ: pattern-matching and pure functions are NOT 
what complete novices are likely to think of.  Or, even if they find 
them in the documentation, may find them such unfamiliar ideas as to be 
reluctant to try them.

Leonid Shifrin wrote:
> Hi,
> 
> namedata = {{"Aardsma", "David", "P"},{"Bay", "Jason", "OF"}}
> 
> Solutions:
> 
> Cases[namedata, {_, _, "P"}]
> 
> Select[namedata, #[[3]] === "P" &]
> 
> Next time consider reading the documentation first before posting your
> question - this one is simple enough to be figured out even by a complete
> novice.
> 
> Regards,
> Leonid
> 
> 
> On Mon, Jun 22, 2009 at 1:23 AM, terrie riley <triley4 at san.rr.com> wrote:
> 
>> from this list select the person who has P in the third position
>>
>>
>> namedata = {{"Aardsma", "David", "P"},{"Bay", "Jason", "OF"}}
>>
>>
> 

-- 
Murray Eisenberg                     murray at math.umass.edu
Mathematics & Statistics Dept.
Lederle Graduate Research Tower      phone 413 549-1020 (H)
University of Massachusetts                413 545-2859 (W)
710 North Pleasant Street            fax   413 545-1801
Amherst, MA 01003-9305


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